User's Manual

Chapter 2: Hardware setup2-10
2.4 System memory
2.4.1 Overview
The motherboard comes with eight (four DIMM per CPU) Double Data Rate 3 (DDR3) Dual
Inline Memory Modules (DIMM) sockets.
A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched
differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for
better performance with less power consumption.
The gure illustrates the location of the DDR3 DIMM sockets:
A DDR3 module is notched differently from a DDR or DDR2 module. DO NOT install a DDR
or DDR2 memory module to the DDR3 slot.
2.4.2 MemoryCongurations
You may install 1GB, 2GB, 4GB, 8GB, 16GB and 32GB* RDIMMs or 1GB, 2GB, 4GB and
8GB* with ECC/Non-ECC UDIMMs or 8GB, 16GB and 32GB* LR-DIMMs into the DIMM
sockets using the memory congurations in this section.
1CPUConguration(mustonCPU1)
DIMM_A1 DIMM_B1 DIMM_C1 DIMM_D1
1 DIMMs
X
2 DIMMs
X X
4 DIMMs
X X X X
• *Refer to ASUS Server AVL for latest update.
• Install the DIMMs starting from slot A1 (CPU1) and E1 (CPU2).
• Always install DIMMs with the same CAS latency. For optimum compatibility, it is
recommended that you obtain memory modules from the same vendor.